Check out the site
http://www.tlg-auto.com/. This is the site I purchased mine from and I purchased the 8000K. You have lifetime warranty. If you go to this site the pictures in it are of my car and the install. Check it out at
http://www.tlg-auto.com/Altima/Altim...High-Beam.html. I have never had a problem with the ballasts or delay in the lights heating up. I also purchased the LED turn signals and when I installed them I had to install a relay so they would not interfere with my OEM wiring but it was easy to install. I have converted reverse lights, interior and turn signals to LED all the products were from this site. Fast shipping and they stand behind their product great.
LED turn signal
8000K HID conversion next to OEM during install

After install picture.